______ to nuclear radiation, even for a short time, may influence genes in human bodies. A．E..

Question

______ to nuclear radiation, even for a short time, may influence genes in human bodies. A．Exposed B．Being exposed C．To expose D．Having exposed

Answer 1

B

试题分析：考查动名词做主语，分析句子成分发现even for a short time, 是插入语，may influence是谓语，前面的部分应该是主语，be exposed to“暴露于”，要用动名词Being exposed to，句意是：暴露于核辐射中甚至很短时间都会影响人体的基因。选B。 点评：做题时要会发现句子结构，如果有插入语可以先忽略，判断所填部分是什么成分，还有要注意是主动还是被动。